Helpful Chemistry Sites:

• Molecular Weight Calculator
  • http://www.lmnoeng.com/molecule.htm
• Interactive Chart of the Nuclides
  • http://www.nndc.bnl.gov/chart/
• Interactive Table of the Elements
  • http://www.webelements.com/
  • http://periodic.lanl.gov/default.htm
• Cool site about Thermodynamic Equilibrium
  • http://jersey.uoregon.edu/vlab/Thermodynamics/index.html

Local weather

• NOAA National Weather Service
  • http://www.nws.noaa.gov/

Other

• MO Department of Natural Resources Springs (and other karst) information
  • http://www.dnr.mo.gov/env/wrc/springsandcaves.htm#Springs
• MO Groundwater Association
  • http://www.missourigroundwater.org/
• Speleology at Washington University in St. Louis
  • http://speleology.wustl.edu/